The scratch built Geiger counter was used to measure background radiation. ​ An Arduino Uno was used to count pulses over ten second period. ​ The results were then compared with the kit built geiger counter.

The scratch built Geiger counter was used to measure background radiation. ​ An Arduino Uno was used to count pulses over ten second period. ​ The results were then compared with the kit built geiger counter.

The scratch built geiger counter was found to be significantly more sensitive when exposed to the cesium source. ​ The scratch built design has a higher voltage across the Geiger Mueller tube 500v compared to 275v. Higher voltage allows lower energy particles to be detected. ​ It is believed that this higher voltage is responsible for the higher count rate in the scratch built counter.

The scratch built geiger counter was found to be significantly more sensitive when exposed to the cesium source. ​ The scratch built design has a higher voltage across the Geiger Mueller tube 500v compared to 275v. Higher voltage allows lower energy particles to be detected. ​ It is believed that this higher voltage is responsible for the higher count rate in the scratch built counter.